GMC - SCHOOL BUS - 1983 RSS 1983 GMC SCHOOL BUS STRUCTURE:BODY 1983 GMC SCHOOL BUS STRUCTURE:BODY 1983 GMC SCHOOL BUS STRUCTURE:BODY 1983 GMC SCHOOL BUS STRUCTURE:BODY 1983 GMC SCHOOL BUS VISIBILITY:GLASS, SIDE/REAR 1983 GMC SCHOOL BUS ELECTRICAL SYSTEM:IGNITION:SWITCH 1983 GMC SCHOOL BUS STRUCTURE:FRAME AND MEMBERS